[W126 Coupe] 560SEC test drive

[Divov]

The diff can leak from one of 3 places
1. The oil seal at the prop-shaft end
2. The oil seals at either drive-shaft flanges
3. The rear plate which is held on by half a dozen bolts.

#3 is easy to fix as it just requires a new paper gasket.
#2 requires removing drive-shafts, removing the back plate (#3), Extracting 
the 2 surclips which retain the 2 short, splined half-shaft hubs and then 
you have easy access to the seals. Don't forget to refit the 2 thrust 
washers but they are pretty obvious.
#1 probably requires removal of the diff to access the seal. (not 100% sure) 
Refitting the whole diff is heavy work & no pleasure. (just done it)
Remember to refill diff with special LS oil as I think yours is an LS diff.
Alec

----- Original Message ----- 
From: "Frederick Auld" <frederick.auld at btopenworld.com>
To: <mbcoupes at mbcoupes.com>
Sent: Friday, May 04, 2007 9:52 PM
Subject: [W126 Coupe] 560SEC test drive



> Test driving an 89 560SEC tomorrow for the second time, and will hand over

> cash if all is well.

>

> Selector:  During the first test drive, the selector was a little stiff,

> certainly more so that my current 500SEC whose selector is very light

> indeed.  Reading through the archives, I see that Dick Spellman 

> experienced

> the same problem and applied some lube the the selector to eradicate the

> problem.  I hope that's all it is and not a sign of worse to come with the

> transmission itself.  The car has done 97500 miles and has only done 10000

> miles in the last three years. It's owned by a retired solicitor who 

> bought

> it in 1990.  Smoke silver with mushroom leather, all standard and original

> (inc Becker Mexico radio cassette).

>

> Rear diff:  The rear diff looks a bit oily... I guess this is a leaky 

> gasket

> or loose diff nut?

>

> Btw, it left the factory without a the cat so delivers a full 300hp as the

> good Lord intended (owners manual says 220kw).

>

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